1222111001001 has 8 divisors (see below), whose sum is σ = 1777616001504. Its totient is φ = 740673333920.

The previous prime is 1222111000991. The next prime is 1222111001029. The reversal of 1222111001001 is 1001001112221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222111001001 - 2⁵ = 1222111000969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222111011001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18516833316 + ... + 18516833381.

It is an arithmetic number, because the mean of its divisors is an integer number (222202000188).

Almost surely, 2^{1222111001001} is an apocalyptic number.

1222111001001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222111001001 is a deficient number, since it is larger than the sum of its proper divisors (555505000503).

1222111001001 is a wasteful number, since it uses less digits than its factorization.

1222111001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37033666711.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1222111001001 its reverse (1001001112221), we get a palindrome (2223112113222).

The spelling of 1222111001001 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, one thousand, one".